Damper.



' W. 0. WHITE.

DAMPER.

APPLICATION FILED NOV. 11, 190B.

921 1 94:; Patented May 11, 1909.

UNITE I WILLARD 0. WHITE, OF REPUBLIC, PENNSYLVANIA.

DAll/ZPER Application filerlNovemoer 11, 1908.

[0 all whom it may concern:

Be it known that I, v' a iLLARD 0. WHITE, a citizen of the UnitedStates, residing at tepublic, in the county of Fayette and State ofPennsylvania, have invented a new and useful Damper, of which thefollowingis a specification.

This invention relates more particularly to a device for regulating theflow of heat in lines constructed for the utilization of waste heat fromcoke ovens to fire boilers, and the object of the present invention isto provide a damper embodying certain novel structural details, wherebythe heat can be better and .101@ readily controlled.

in using the waste heat from coke ovens, the oven is connected to a mainconduit or flue by a small flue, and from the main conduit lines arecarried beneath the boilers in such a manner as to allow the heat topass up back of the bridge-wall to the boiler tubes. Since the heat inthe main conduit is variable, both in quantity and intensity, it isessential to the successful and safe operation of a boiler plant, thatmeans be provided for shutting off from any boilers either all the heat,or a portion thereof, whenever desired.

In the accompanying drawings z Figure 1 is a central longitudinalsection of the main conduit above referred to, showing the applicationof the invention. Fig. 2 is a transverse section on the line 2-2 ofFig. 1. Fig. 3 is a plan view. nig. 4 is a pers ective view of one ofthe slabs hereinafter refbrred to.

Referring more particularly to the drawings, 5 denotes the main conduit.Into this is built a pier or piers 6, whereby the line is divided intosections, each section to be of such width that a tile of ordinary sizewill span it, and lap sufliciently on the pier, and in grooves 7, formedin the opposite side walls of the flue. The top of the pier is spaced ashort distance from the crown of the conduit. The bearing face of thepier and that of the grooves stand in the same plane, said plane beinginclined from the vertical (toward the raft) sufiioiently to allow eachtile to stay in position by its own weight. The tiles herein referred toare designated by the reference numeral 8. The grooves 7 are carriedacross the floor of the conduit, as indicated at 9, to prevent leakageunder the tiles, the lowermost tile seating in said groove. The width ofthe grooves is such that the tiles will not bind therein. In the crownof the con- Specification of Letters Patent.

Patented May 11, 1909.

Serial No. 462,186.

duit is an opening 10 of such a length that the tiles may be placed. inposition on the inclined face of the pier 6, the end of the openingbeing in line with the inner walls of the grooves 7. The width of theopening 10 is such that a tile of ordinary size can be used for a cover.Such a tile is shown at 11.

To operate the damper, the cover 11 is removed, and the desired numberof tiles lowered to position by means of tongs. When it is desired toshut the heat off entirely, a sufiicient number of tiles will be loweredto completely close up the conduit, and the cover 11 can be left off,after the tiles are in place, whereby the opening 10 will permit acounter-draft of cool air to pass in and act as a check on that portionof the conduit ahead of the damper. It will be seen from Fig. 2, thatthe tiles extend en tirely across the conduit, so that, by placing moreor less of such tiles in position on the pier 6, the heat is readilycontrolled. The grooves 7 are inclined at the same angle as the face ofthe pier, and these grooves, together with the groove 9, securely holdthe tiles in place, each tile being held in position by its own weight.

The damper structure herein described can be easily and cheaply built,and it effectually serves the purpose for which it is designed.

The brickwork 12 surrounding the opening 10, has its top course lined bya frame of angle or T-irons 13, to prevent dislodgment of such course,and losing thereof during the manipulation of the tiles.

The number of piers employed will depend on the width of the flue.

What is claimed is 1. The combination with a conduit, of a pier therein,and a series of slabs supported on one face of the pier, and extendingacross the conduit.

2. The combination with a conduit, of a pier therein, having an inclinedface, and a series of slabs supported on said face, and eX- tendingacross the conduit. I

3. The combination with a conduit having a groove in opposite wallsthereof, of a pier in the conduit, having an inclined face which is inalinement with the aforesaid grooves, and a series of slabs supported onsaid inclined face, and extending across the conduit into the aforesaidgrooves.

4. The combination with a conduit having a groove in opposite Walls, andan opening in the adjoining Wall communicating with said grooves, of apier in the conduit having an inclined face in alinement With theaforesaid grooves, and a series of slabs supported on said inclinedface, and extending across the conduit into the grooves.

5. The combination. with a conduit having a groove extending across thefloor thereof, a pier in the conduit having an inclined face I i l l 1extending to said groove, and a series of slabs supported on saidinclined face, the loWerf inost slab seating in the groove.

6. The combination with a conduit, of a pier therein, and a series ofslabs removably across the sections said slabs being remov- 20 ablesuccessively to increase the area of the conduit sections.

In testimony that I claim the foregoing as my own, I have hereto ailixedmy signature in the presence of two Witnesses.

WILLARD O. i VHITE.

ii itnessesz i (J. 0. ROBINSON, GEO. W. SEMANS.

